Disinfecting agent.



PAT NT OFFICE.

ZZLBEELFE' "Q; GERMANY, ASSIGNOR 'I O FARBENFABRIKEN VORM. I, 2; CO., 01 ELEEEFELD; GIJBLDLZLIGJ'Y, A CORPORATION OF GERMANY.

EISINEEC'EING- AGENT;

1 coins 'l A1114. doctor i citizen of the Gerat .Elherfeld, Gerd new and 5 llllll'lfii useful Ini-r proven lnsmt'ectmg'Agents, of

WllH'll 1+; a specification.

it l fail that the salts; of the 'hithert mercuric cnn'ipeiuids of substiti lie git-ids containing 2 or more especially elkyh, halogem. halogen-henzoic acids subsiil: ens have a disinfectant 1:: :i'l mam cases to that of it in the presence of soap *ioi rnientioned compounds ziyieutically valuable i'o H he n aiming in their molecule the e group Where or e benzene radical sub- SlllH= 1 more suhstituents such icated, are obtained by oomiingg acids with mersalts at higher temthe mercuric or absence of are "i /7X soluol" line compmznds which are al es forn'ii salts and H31 and benzene. 0n drochloric acid they being produced.

te the new process more ltarnplcs are given, the

parts of IAL-dimethylQ- well mixed with 40 parts d heated in an oil bath until a test portion of at solution with caustic 11;; the mixture is exl and dissolved in highly 2 Eye in order to remove it]; carbonic acid Specification at Legalhunt .epplicatlozi filed January 27, 1912., Serial Ho. 873,795.

Patented J uly 30, 1912.

through the solution the anhydrid of the oxy-mercuric-dimethylbenzoie acid l/ co\ is precipitated as a fine white crystalline powder. it is almost insoluble in water and the usual organic solvents, but it is very easilysoluble in allmlics forming the corresponding salts. By heating it with hydrochloric acidithe com 'iound split u into dimethyl-benzoic acid and mercuric chlorid. *On'being heated it is decomposed without melting. Trimethyl or other dimethylbenzoic; acids or veratric acid (3.4- dimethoXy-benzoic acid) can be used.

Example 2: 100 parts of 3.5-dibr0ino-benzoic acid and parts of mercuric acetate are heated in an oil bath to from l30--l40 it; until a test portion 'torms a clear SOlU' is precipitated as a white crystalline poua.

dcr. It does not differ in its properties from the compound described according to Example 1. Also other oi the above mentioned acids can be used, c. g. 1.2-dimethyl- 5-bromo-4-benzoic acid.

I claim 1. The herein described mercuric compounds of benzoic acids substituted in the nucleus by more than one substituent-con-z taimng in their molecule the characteristic in which it stands: fore "substituted benzol radical, whichare crystalline compounds soluble indi'lute alkaliesi forming salts, insoluble in alcohol,.ether and benzene, splitting oft HgOl on being boiled with hydroaci' chloric and being valuable disinfect ,ants, substantially as' described.

2. The herein described mercuric coni- :pounds of benzoic acids substituted in the nucleus by more than one substituent containing their'molecule the characteristic groupv O Q I R 0 in which R stands for an alkyl substituted benzene radicahwhich are crystalline com pounds soluble in dilute alkalies forming salts, insoluble in a1coh0l,'ether and benzene, splitting 01f HgCl, onbeing boiled with. hydrochloric acid; and being valuable v disinfectants, substantially as described.

'3. The herein described mercuric com- .-.T', unds -o benzoie acids substituted in the eague nucleus by more than one substituent' com' taining in their molecule the characteristic group i co I v I 3/ o e in which R stands for a diJ-alkyl substituted I benzene radical, which are crystalline compounds soluble in dilute alkalies forming.

chlorid on being' boiled with h drochloric acid; and being a valuable disin ectant, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

. LUDWIG TAUB. A [La] Witnesses:

'Hnmm Norm,

A. Num.. 

